Improvement in ore-washers



S. T. DORLAND.

Improvement in Ore-Washers.

Patented Oct. 29, 1872 7///////////// wyk WITNESSES:

INVENTOR:

UNITED STATES PATENT QFFICE.

SAMUEL T. DORLAND, OF BEEKMAN, NEW YORK, ASSIGNOR OF ONE-HALF HIS RIGHTTO LEVI P. TBEADWELL, OF DANBURY, CONNECTICUT.

IMPROVEMENT IN ORE-WASHERS.

Specification forming part of Letters Patent No. 132,642, dated October29, 1872.

To all whom it may concern:

, Be it known that I, SAMUEL T. DORLAND, of Beekman, county of Dutchess,and State of New York, have invented a Machine for Screenin g Ore, ofwhich the following is a specification:

My invention consists in an inclined screen placed at an angle to thecurb of the sluicebed and beneath the plane thereof, and in a curvedblock or similar device for directing the current of ore, water, 850 toand upon the highest part of the screen. To a trough or other device forconducting a current of water accompanied with ore 1 apply a combinationof grates or screens, one of which is at such an angle as to separatethe ore from the water, fine dirt, or other waste matter, and at thesame time and by the same operation to discharge it in a convenientmanner and fit for use.

Figure l is a longitudinal section; Fig. 2 is a cross-section; and Fig.3 is a plan.

A is a trough, through which flows a current of water containing theore. It is inclined so as to carry all the ore that may be in it and atthe same.time clear itself. B is a curved block of wood, fastened to theside of the trough and designed to throw the current upon the top end ofthe screen E. C is a screen in the bottom of the trough A, designed toallow the escape of a portion of the water and regulate the supply onthe screen E. E is the screen that receives the ore. It is placed atsuch an angle as to discharge the ore at the opening F, and at the sametime to allow the water, dirt, or other waste matter to escape throughit; or the screen E may be placed so as to receive the 'ore and waterdirectly from the sluice, allowing the debris to fall through into thebox C and pass off at the outlet H, while the ore will fall down theinclined screen and be delivered at an outlet made in the side I. In

this arrangement of the inclined screen and sluice the supplementalscreen C can be omitted. I G is a receiver that takes the water andwaste matter from the screens C and E and conducts them away at theopening H. The

space between C and E is closed by the end D.

I claim as my invention-- 1. The inclined screen E placed beneath theplane of and at an angle to the curb of the sluice, as and for thepurpose specified.

2. The curved block B in combination with the sluice and the inclinedscreen E, substantially as specified.

3. The combination of curved block B, screens E and C, as and for thepurpose set forth.

SAMUEL T. DORLAND.

Witnesses:

I. S. LYON, L. P. TREADW'ELL.

